Relevant bibliographies by topics / Methyl salicylate esterase

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Academic literature on the topic 'Methyl salicylate esterase'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Methyl salicylate esterase"

1

Chigurupati, Pavan, Imdadul Haq, and Dhirendra Kumar. "Tobacco methyl salicylate esterase mediates nonhost resistance." Current Plant Biology 6 (October 2016): 48–55. http://dx.doi.org/10.1016/j.cpb.2016.10.001.

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2

Jones, Rheinallt M., Vassilis Pagmantidis, and Peter A. Williams. "sal Genes Determining the Catabolism of Salicylate Esters Are Part of a Supraoperonic Cluster of Catabolic Genes in Acinetobacter sp. Strain ADP1." Journal of Bacteriology 182, no. 7 (April 1, 2000): 2018–25. http://dx.doi.org/10.1128/jb.182.7.2018-2025.2000.

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ABSTRACT A 5-kbp region upstream of the are-ben-cat genes was cloned from Acinetobacter sp. strain ADP1, extending the supraoperonic cluster of catabolic genes to 30 kbp. Four open reading frames, salA, salR, salE, andsalD, were identified from the nucleotide sequence. Reverse transcription-PCR studies suggested that these open reading frames are organized into two convergent transcription units, salARand salDE. The salE gene, encoding a protein of 239 residues, was ligated into expression vector pET5a. Its product, SalE, was shown to have esterase activity against short-chain alkyl esters of 4-nitrophenol but was also able to hydrolyze ethyl salicylate to ethanol and salicylic acid. A mutant of ADP1 with a Kmrcassette introduced into salE had lost the ability to utilize only ethyl and methyl salicylates of the esters tested as sole carbon sources, and no esterase activity against ethyl salicylate could be detected in cell extracts. SalE was induced during growth on ethyl salicylate but not during growth on salicylate itself. salDencoded a protein of undetermined function with homologies to theEscherichia coli FadL membrane protein, which is involved in facilitating fatty acid transport, and a number of other proteins detected during aromatic catabolism, which may also function in hydrocarbon transport or uptake processes. A Kmr cassette insertion in salD deleteriously affected cell growth and viability. The salA and salR gene products closely resemble two Pseudomonas proteins, NahG and NahR, respectively encoding salicylate hydroxylase and the LysR family regulator of both salicylate and naphthalene catabolism.salA was cloned into pUC18 together with salRand salE, and its gene product showed salicylate-inducible hydroxylase activity against a range of substituted salicylates, with the same relative specific activities as found in wild-type ADP1 grown on salicylate. Mutations involving insertion of Kmrcassettes into salA and salR eliminated expression of salicylate hydroxylase activity and the ability to grow on either salicylate or ethyl salicylate. Studies of mutants with disruptions of genes of the β-ketoadipate pathway with or without an additional salE mutation confirmed that ethyl salicylate and salicylate were channeled into the β-ketoadipate pathway at the level of catechol and thence dissimilated by the cat gene products. SalR appeared to regulate expression of salA but not salE.
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3

Manosalva, Patricia M., Sang-Wook Park, Farhad Forouhar, Liang Tong, William E. Fry, and Daniel F. Klessig. "Methyl Esterase 1 (StMES1) Is Required for Systemic Acquired Resistance in Potato." Molecular Plant-Microbe Interactions® 23, no. 9 (September 2010): 1151–63. http://dx.doi.org/10.1094/mpmi-23-9-1151.

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Whether salicylic acid (SA) plays a role in systemic acquired resistance (SAR) signaling in potato is currently unclear because potato, unlike tobacco and Arabidopsis, contains highly elevated levels of endogenous SA. Recent studies have indicated that the SA derivative methyl salicylate (MeSA) serves as a long-distance phloem-mobile SAR signal in tobacco and Arabidopsis. Once in the distal, uninfected tissue of these plant species, MeSA must be converted into biologically active SA by the esterase activity of SA-binding protein 2 (SABP2) in tobacco or members of the AtMES family in Arabidopsis. In this study, we have identified the potato ortholog of tobacco SABP2 (StMES1) and shown that the recombinant protein converts MeSA to SA; this MeSA esterase activity is feedback inhibited by SA or its synthetic analog, 2, 2, 2, 2′-tetra-fluoroacetophenone (tetraFA). Potato plants (cv. Désirée) in which StMES1 activity was suppressed, due to either tetraFA treatment or silencing of StMES1 expression, were compromised for arachidonic acid (AA)-induced SAR development against Phytophthora infestans. Presumably due to the inability of these plants to convert MeSA to SA, the SAR-defective phenotype correlated with elevated levels of MeSA and reduced expression of pathogenesis-related (PR) genes in the untreated distal tissue. Together, these results strongly suggest that SAR signaling in potato requires StMES1, its corresponding MeSA esterase activity, and MeSA. Furthermore, the similarities between SAR signaling in potato, tobacco, and Arabidopsis suggest that at least certain SAR signaling components are conserved among plants, regardless of endogenous SA levels.
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4

Manoharan, Ranjith Kumar, Ashokraj Shanmugam, Indeok Hwang, Jong-In Park, and Ill-Sup Nou. "Expression of salicylic acid-related genes in Brassica oleracea var. capitata during Plasmodiophora brassicae infection." Genome 59, no. 6 (June 2016): 379–91. http://dx.doi.org/10.1139/gen-2016-0018.

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Brassica oleracea var. capitata (cabbage) is an important vegetable crop in Asian countries such as Korea, China, and Japan. Cabbage production is severely affected by clubroot disease caused by the soil-borne plant pathogen Plasmodiophora brassicae. During clubroot development, methyl salicylate (MeSA) is biosynthesized from salicylic acid (SA) by methyltransferase. In addition, methyl salicylate esterase (MES) plays a major role in the conversion of MeSA back into free SA. The interrelationship between MES and methytransferases during clubroot development has not been fully explored. To begin to examine these relationships, we investigated the expression of MES genes in disease-susceptible and disease-resistant plants during clubroot development. We identified three MES-encoding genes potentially involved in the defense against pathogen attack. We found that SS1 was upregulated in both the leaves and roots of B. oleracea during P. brassicae infection. These results support the conclusion that SA biosynthesis is suppressed during pathogen infection in resistant plants. We also characterized the expression of a B. oleracea BSMT gene, which appears to be involved in glycosylation rather than MeSA biosynthesis. Our results provide insight into the functions and interactions of genes for MES and methyltransferase during infection. Taken together, our findings indicate that MES genes are important candidates for use to control clubroot diseases.
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5

Tripathi, Diwaker, Yu-Lin Jiang, and Dhirendra Kumar. "SABP2, a methyl salicylate esterase is required for the systemic acquired resistance induced by acibenzolar-S -methyl in plants." FEBS Letters 584, no. 15 (July 9, 2010): 3458–63. http://dx.doi.org/10.1016/j.febslet.2010.06.046.

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6

Forouhar, F., Y. Yang, D. Kumar, Y. Chen, E. Fridman, S. W. Park, Y. Chiang, et al. "Structural and biochemical studies identify tobacco SABP2 as a methyl salicylate esterase and implicate it in plant innate immunity." Proceedings of the National Academy of Sciences 102, no. 5 (January 24, 2005): 1773–78. http://dx.doi.org/10.1073/pnas.0409227102.

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7

Djavaheri, Mohammad, Lisong Ma, Daniel F. Klessig, Axel Mithöfer, Gordon Gropp, and Hossein Borhan. "Mimicking the Host Regulation of Salicylic Acid: A Virulence Strategy by the Clubroot Pathogen Plasmodiophora brassicae." Molecular Plant-Microbe Interactions® 32, no. 3 (March 2019): 296–305. http://dx.doi.org/10.1094/mpmi-07-18-0192-r.

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The plant hormone salicylic acid (SA) plays a critical role in defense against biotrophic pathogens such as Plasmodiophora brassicae, which is an obligate pathogen of crucifer species and the causal agent of clubroot disease of canola (Brassica napus). P. brassicae encodes a protein, predicted to be secreted, with very limited homology to benzoic acid (BA)/SA–methyltransferase, designated PbBSMT. PbBSMT has a SA- and an indole-3-acetic acid–binding domain, which are also present in Arabidopsis thaliana BSMT1 (AtBSMT1) and, like AtBSMT1, has been shown to methylate BA and SA. In support of the hypothesis that P. brassicae uses PbBSMT to overcome SA-mediated defenses by converting SA into inactive methyl salicylate (MeSA), here, we show that PbBSMT suppresses local defense and provide evidence that PbBSMT is much more effective than AtBSMT1 at suppressing the levels of SA and its associated effects. Basal SA levels in Arabidopsis plants that constitutively overexpress PbBSMT compared with those in Arabidopsis wild-type Col-0 (WT) were reduced approximately 80% versus only a 50% reduction in plants overexpressing AtBSMT1. PbBSMT-overexpressing plants were more susceptible to P. brassicae than WT plants; they also were partially compromised in nonhost resistance to Albugo candida. In contrast, AtBSMT1-overexpressing plants were not more susceptible than WT to either P. brassicae or A. candida. Furthermore, transgenic Arabidopsis and tobacco plants overexpressing PbBSMT exhibited increased susceptibility to virulent Pseudomonas syringae pv. tomato DC3000 (DC3000) and virulent Pseudomonas syringae pv. tabaci, respectively. Gene-mediated resistance to DC3000/AvrRpt2 and tobacco mosaic virus (TMV) was also compromised in Arabidopsis and Nicotiana tabacum ‘Xanthi-nc’ plants overexpressing PbBSMT, respectively. Transient expression of PbBSMT or AtBSMT1 in lower leaves of N. tabacum Xanthi-nc resulted in systemic acquired resistance (SAR)-like enhanced resistance to TMV in the distal systemic leaves. Chimeric grafting experiments revealed that, similar to SAR, the development of a PbBSMT-mediated SAR-like phenotype was also dependent on the MeSA esterase activity of NtSABP2 in the systemic leaves. Collectively, these results strongly suggest that PbBSMT is a novel effector, which is secreted by P. brassicae into its host plant to deplete pathogen-induced SA accumulation.
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8

Alajelee, Mohamad. "Synthesis and Atiplatelet of 2-(ethyl amino acid esters), Amino pyridyl 1,3- oxzine." JOURNAL OF ADVANCES IN CHEMISTRY 2, no. 2 (August 7, 2006): 91–97. http://dx.doi.org/10.24297/jac.v2i2.898.

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2-(N-glycyl ,Alanyl , leucinyl , isoleacinyl , methionyl , phenyl alanyl, vilinyl methyl ester) , 2-Amino and 4- Amino pyrideyl -1,3- Benzoxazine -4- one were synthesized from the reaction of the corresponding amino acids ester , Amino pyridines with methyl cyano salicylate using improved method. The resulted benzoxazine derivative were tested for their Antiplatelet inhibitory activity , their IR , NMR (1H , 13C) were also studied and checked by elemental analysis.
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Petrus, Rafał, Patryk Fałat, and Piotr Sobota. "Use of lithium aryloxides as promoters for preparation of α-hydroxy acid esters." Dalton Transactions 49, no. 3 (2020): 866–76. http://dx.doi.org/10.1039/c9dt03631h.

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Hexanuclear lithium aryloxide [Li6(MesalO)6] (1) supported by methyl salicylato (MesalOH) ligand was investigated as a catalyst for the alcoholysis of l-lactide and glycolide for the preparation of α-hydroxy acid esters of industrial applications.
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10

Zhao, Nan, Ju Guan, Farhad Forouhar, Timothy J. Tschaplinski, Zong-Ming Cheng, Liang Tong, and Feng Chen. "Two poplar methyl salicylate esterases display comparable biochemical properties but divergent expression patterns." Phytochemistry 70, no. 1 (January 2009): 32–39. http://dx.doi.org/10.1016/j.phytochem.2008.11.014.

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Dissertations / Theses on the topic "Methyl salicylate esterase"

1

Lin, Jingyu (Lynn). "Functional Genomic Studies of Soybean Defenses against Pests and Soybean Meal Improvement." 2011. http://trace.tennessee.edu/utk_graddiss/1206.

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Soybean [Glycine max (L.) Merr.] is an important crop worldwide. It has been widely consumed for protein, oil and other soy products. To develop soybean cultivars with greater resistance against pests and improved meal quality, it is important to elucidate the molecular bases of these traits. This dissertation aims to investigate the biochemical and biological functions of soybean genes from four gene families, which are hypothesized to be associated with soybean defense against pests and soybean meal quality. There are three specific objectives in this dissertation. The first one is to determine the function of components in the salicylic acid (SA) signaling pathway in soybean resistance against soybean cyst nematode (Heterodera glycines, SCN). The second one is to determine whether insect herbivory induce the emission of volatiles from soybean, and if so, how these volatiles are biosynthesized. The third objective is to identify and characterize soybean mannanase genes that can be used for the improvement of soybean meal quality. The soybean genome has been fully sequenced, which provides opportunities for cross-species comparison of gene families of interest and identification of candidate genes in soybean. The cloned cDNAs of putative genes were expressed in Escherichia coli to produce recombinant enzymes. Through biochemical assays, these proteins were proved to be soybean salicylic acid methyltransferase (GmSAMT1), methyl salicylate esterase (GmSABP2-1), α[alpha]-farnesene synthase (GmTPS1) and E-β[beta]-caryophyllene synthase (GmTPS2), and endo-β[beta]-mannanase (GmMAN1). Through a transgenic hairy root system harboring overexpression of GmSAMT1 and GmSABP2-1, both of these two genes were evaluated for their biological function related to resistance against SCN. The results showed that the over-expression of GmSAMT1 and GmSABP2-1 in the susceptible soybean background lead to enhanced resistance against SCN. Among four putative soybean mannanase genes, one gene was cloned and characterized. GmMAN1 showed the endo-β[beta]-mannanase hydrolyse activity and can hydrolyze cell walls isolated from soybean seeds. In summary, using comparative and functional genomics, a number of genes involved in soybean defense and meal quality were isolated and characterized. This study provides novel knowledge and molecular tools for the genetic improvement of soybean for enhanced resistance and improved meal quality.
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